#E42742
Closest named color: Imperial Red (#E63946). oklch(59.5% 0.219 20.7), rgb(228, 39, 66).
Aa
Black text reads best on this color (4.66:1).
About this color
#E42742 is a medium-dark, vivid red. In OKLCH its lightness is 60%, its chroma 0.219 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Imperial Red (#E63946), ΔE 0.021 away. Black text reads best on it, at 4.66:1.
| Hue family | Reds |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.219) |
| Temperature | warm |
| Nearest name | Imperial Red (#E63946) |
| Black text | 4.66:1 |
| White text | 4.49:1 |
Values
| HEX | #E42742 |
| RGB | rgb(228, 39, 66) |
| HSL | hsl(351, 78%, 52%) |
| OKLCH | oklch(59.5% 0.219 20.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #E42742 | 4.49:1 | AA large text | Lc -74.8 | Content text, not long reading |
| Black text on #E42742 | 4.66:1 | AA | Lc 34.8 | Non-text elements, placeholder text |
| #E42742 text on white | 4.49:1 | AA large text | Lc 69.3 | Content text, not long reading |
| #E42742 text on black | 4.66:1 | AA | Lc -32.3 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#FFF2F1
oklch(97.1% 0.014 22.8)
-
Step 100
100
#FEE2E1
oklch(93.5% 0.031 20.2)
-
Step 200
200
#FECAC8
oklch(88.4% 0.059 20.9)
-
Step 300
300
#FEA4A3
oklch(80.8% 0.107 20.4)
-
Step 400
400
#F96D71
oklch(70.7% 0.172 20.8)
-
Step 500
500 (this color)
#E42742
oklch(59.5% 0.219 20.7)
-
Step 600
600
#D70035
oklch(55.6% 0.223 20.7)
-
Step 700
700
#B6002B
oklch(49.1% 0.197 20.8)
-
Step 800
800
#970022
oklch(42.8% 0.172 20.8)
-
Step 900
900
#7C0B1E
oklch(37.7% 0.143 20.6)
-
Step 950
950
#490C12
oklch(26.9% 0.09 20.7)
#E42742 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #645D41 | 0.243 |
| Deuteranopia (no green cones) | #93853C | 0.221 |
| Tritanopia (no blue cones) | #FB0034 | 0.044 |
| Achromatopsia (no color) | #777777 | 0.221 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E42742
#E42742
oklch(59.5% 0.219 20.7)
- #009097
#009097
oklch(59.4% 0.101 200.9)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #E42742, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Imperial Red #E63946 ΔE 0.021
- Red Pantone #EF233C ΔE 0.022
- Crimson #DC143C ΔE 0.025
- Pink Red #F5054F ΔE 0.038
- Cherry Red #F7022A ΔE 0.040
- Lipstick #D5174E ΔE 0.042
- Faded Red #D3494E ΔE 0.046
- Strawberry #FB2943 ΔE 0.047
Use #E42742 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.